IOTA/ES - Call for Observations
International Occultation Timing Association / European Section e.V.
Predictions made with data from JPL Horizons and Gaia EDR3 for targets of flybys by spacecrafts. High precision astrometry from stellar occultations is highly desired.
Binary Jupiter Trojan! Target of NASA’s Lucy mission! Very faint star! Last update: 2026 Oct 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2117-617-311383-457488-U028837 Prediction of the Lucky Star project (2026 Jan 12): https://lesia.obspm.fr/lucky-star/occ.php?p=173495…
Binary Jupiter Trojan! Target of NASA’s Lucy mission! Very faint star! Last update: 2026 Oct 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2117-617_1-311383-457488-U028837 Prediction of the Lucky Star project (2026 Jan 12): https://lesia.obspm.fr/lucky-star/occ.php?p=173665…
Binary Jupiter Trojan! Target of NASA’s Lucy mission! Very faint star! Last update: 2026 Aug 02 Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2060-617-77041-650084-U022201 Prediction Lucky Star project (2026 Jan 12) for Menoetius: https://lesia.obspm.fr/lucky-star/occ.php?p=173641…
Binary Jupiter Trojan! Target of NASA’s Lucy mission! Very faint star! Last update: 2026 Aug 02 Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2060-617-77041-650084-U022201 Prediction Lucky Star project (2026 Jan 12) for Patroclus: https://lesia.obspm.fr/lucky-star/occ.php?p=173473…
Apollo asteroid! Target of the DART and HERA missions! Extreme short max. duration of only 0.07 s! Last update: 2026 May 25, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1992-65803-235029-646569-U081684
Apollo asteroid! Target of the DART and HERA missions! Very faint star! Short max. duration of only 0.41 s! Last update: 2026 Apr 15, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1942-65803-249499-646589-U104468
Apollo asteroid! Target of the DART and HERA missions! Short max. duration of only 0.35 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1931-65803-249472-646601-U098595
Kallichore is a satellite of Jupiter and a flyby target of ESA’s mission JUICE! Yücel Kılıç, Instituto de Astrofísica de Andalucía (IAA-CSIC), wrote on Planoccult on Mar 30: Following a…
Target of the NASA’s Psyche mission! Faint mag drop of only 0.14 mag! Last update: 2026 Mar 15, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1904-16-73570-649293-U013033
Jupiter Trojan! Target of NASA’s Lucy mission! Last update: 2026 Jan 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1866-21900-165614-647429-T00557-1 Prediction of the Lucky Star project (2025 Aug 21): https://lesia.obspm.fr/lucky-star/occ.php?p=157035 Prediction by SwRI (2023…